Java tutorial
/* AndroidSwissKnife Copyright (C) 2016 macleod2486 This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see [http://www.gnu.org/licenses/]. */ package com.macleod2486.androidswissknife.views; import android.content.pm.PackageManager; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import com.macleod2486.androidswissknife.R; import com.macleod2486.androidswissknife.components.Flashlight; import com.macleod2486.androidswissknife.components.Location; import com.macleod2486.androidswissknife.components.Wifi; public class Toggles extends Fragment { //Location Button toggleLocation; Location location; //Torch Button toggleLight; Flashlight toggleLightListener; //Wifi Button toggleWifi; Wifi toggleWifiListener; final int CAMERA_CODE = 0; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.toggles, container, false); toggleLight = (Button) view.findViewById(R.id.toggleLight); if (getActivity().getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH)) { toggleLightListener = new Flashlight(getActivity(), CAMERA_CODE); toggleLight.setOnClickListener(toggleLightListener); } toggleWifi = (Button) view.findViewById(R.id.toggleWifi); if (getActivity().getPackageManager().hasSystemFeature(PackageManager.FEATURE_WIFI)) { toggleWifiListener = new Wifi(getActivity()); toggleWifi.setOnClickListener(toggleWifiListener); } toggleLocation = (Button) view.findViewById(R.id.toggleGps); if (getActivity().getPackageManager().hasSystemFeature(PackageManager.FEATURE_LOCATION_GPS)) { location = new Location(getActivity()); toggleLocation.setOnClickListener(location); } return view; } public void toggleLight() { toggleLightListener.toggleLight(); } }